Why to do about my relationship?

My boyfriend and I have been together for 2 yrs. He lives an hr away and we see each thee on weekends. Lately, during our Christmas break he would go a day without texting me or take forever to respond an that's something he never does. We had a major rough patch during the break but cleared it up. But break is over now and today he didn't text or call and I did. He didn't answer any texts or calls. He finally emailed me back saying he was in the library and doesn't have his phone. But the message said sent from my iPhone. They have Mac in the library. I don't know what's going on. I feel like we have talked about this over and over. Is he cheating? Am I doing something?

First of all i'm not one for long distance relationships one reason is because of this, you don't get to see each other a lot and in time you become distant. What you said does sound a bit weird but it doesn't mean he's cheating but there maybe something he's hiding perhaps. Him texting less isn't to weird after all it was the christmas break and maybe he was busy with family or something. Normally i'd say to talk to him and see what's going on but seeing as how you have there's not much i can help with sorry, how ever it does sound like hes hiding something he might be cheating he might not and if he is it will be very hard to find off when you live far away Id say give it a bit more time and see if he gets worse or doesn't change at all then you may want to think about breaking up. I know it may not be what you wanted to here and i'm sorry.